Omega-engineering CN9400 User Manual download pdf (Page 17)

Second Setpoint

SUBSIDIARY SP2 MODE:

Latch/sequence or non-linear cool.

Latch alarm

LtCh

When activated, the alarm latches until manually reset, even

though the alarm condition may have disappeared.

Sequence alarm

hoLd

When

hoLd

is selected, in any alarm mode, it prevents an

alarm signal on power-up. The alarm is enabled only after

the process temperature has reached setpoint.

TO CONFIGURE SP2 AS A PROPORTIONAL

CONTROL OUTPUT

In level 2 select

then select the required option.

In level 1 select

and then set the required proportional band.

In level 1 select

and then set the setpoint (SP2) value (y°).

SP2 OUTPUT AND LED INDICATION STATES - IN

ALARM CONDITION

SP2 ALARM ANNUNCIATOR

When an SP2 alarm mode is selected in SP2.A the alarm

annunciator

-AL-

is displayed, alternating with the process

temperature, during alarm condition.

Note: The annunciator may be disabled by selecting

function

and option

in level 4.

SP2 in cool strategy

(See heat-cool configuration in ADVANCED SETTINGS page 23).

✱

Without sequence

alarm

Alarms on

power up

setpoint

Y°

✱

Y°

setpoint

No alarm on

power up

With sequence alarm

Alarm

enabled

Alarm operates

normally

Alarm type ON-OFF

operating mode

Proportional

operating mode

FS.HI

COOL

FS.LO

BAND

DV.LO

DV.HI

Deviation

Full scale

Strategy

SP2

Output state

SP2

LED state

SP2

Output state

SP2

LED state

BAND

: on-off mode only

Output ON

(Relay or SSd energised)

Output OFF

(Relay or SSd de-energised)

LED ON

Temperature above setpoint

SP2.B

SP2.A

BND.2

SET.2

NO.AL

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Omega-engineering CN9400 User Manual Page 17

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